[240ss]

So heres the problem. Ive had my 2871r turbo on my SR for about 7 months now and have always run the stock wastegate that came with the turbo when i bought it brand new. When I first got it i didnt adjust the arm, i just made sure the nut on the arm was tight and put it in. It boosted fine (~16 psi) until one day when the arm came off the flapper. I put it back on and then it boosts to like 18-20. So I dealt with that for a while until i pulled my motor week to do some maintainance. Put my motor back in and now it boosts to god knows what, i stopped pulling at 24 psi. what could be the problem here? Bad actuator? When i put the arm on the flapper its super tight, tighter than i remember it being but i cant lengthen the rod any further. Any input would be appreciated. thanks! oh and my vacuum source is coming from the intake manifold